The More Things Change

There’s an expression: the more things change the more they stay the same. Here we are going to look at miniscule changes build up over time to become really big changes. The more things change, the more they are changed.

Amazing But True!

Credit: ESO/Igor Chekalin

Source: http://en.wikipedia.org/wiki/File:NGC_3169_NGC_3166.jpg

License: CC BY-NC 3.0

Interacting galaxies - their gravitational fields are close enough to influence each other
[Figure2]

Even though you’re young, no one lives forever. So you’ll just have to imagine the future when

Niagara Falls is just a river

The night sky contains an object almost as bright as the Sun

Total solar eclipses no longer happen

Earthlings reside in the galaxy Milkdromeda

Explore More

With the link below, learn more about changes that will be taking place over the next several billion years. Then answer the following questions.